The Prop Firm Consistency Rule, Explained With a Calculator
A consistency rule says no single day may be too large a share of your total profit. Pass the target with one huge day and you can fail on this alone. Here is the calculation, and what you still need.
A consistency rule caps how much of your total profit may come from your single best day, usually calculated as best day divided by total profit times 100. Exceed the firm's threshold and the evaluation can be extended, the payout reduced or the account rejected, even when the profit target was reached. Thresholds and the measured period vary by firm.
Consistency rule calculator
Best day ÷ total profit × 100. Some firms measure against the profit target instead of total profit, use a different window, or apply it to payouts as well as evaluations — always read your own account's terms.
The consistency rule each firm holds in our data
What the rule is for
A consistency rule looks at how your profit was produced, not just whether you hit the target. The usual form limits how much of your total profit may come from your best single day. If your best day is too large a share, the account can be rejected, the payout reduced, or the evaluation extended - even though the target was reached.
The calculation
The common version is simply:
Best day ÷ total profit × 100
If that percentage is above the firm's threshold, you are outside the rule. The calculator above works the other way round, which is the number you actually need: given your best day so far and the threshold, how much total profit do you need before you are compliant.
Consistency is a habit before it is a rule. Chart Bound drills the repeatable version of the same setup, free.
Play free, no signup →How traders trip over it
- One outsized day early. A big first day sets a bar the rest of the evaluation has to clear, and the only fix is more trading days at a smaller size.
- Sizing up after a loss. Recovering a bad day in one go creates exactly the shape the rule is designed to catch.
- Treating the target as the finish line. With a consistency rule, hitting the target is necessary but not sufficient.
- Assuming it only applies during the evaluation. Some firms apply a version of it to funded payouts too.
Trading inside the rule
The practical approach is to cap what any single day is allowed to add, at a level you choose in advance, and to spread the target over more days at a smaller risk per trade. That is slower, and it is also the behaviour the rule exists to encourage. Size each trade from a fixed risk percentage with the lot size calculator instead of sizing up when you feel behind, and keep the daily loss limit and drawdown type in view at the same time.
Frequently asked questions
What is a consistency rule at a prop firm?
A rule that limits how concentrated your profit may be, usually by capping the share of total profit that can come from your single best day.
How is the consistency percentage calculated?
Most commonly best day divided by total profit, multiplied by 100. Some firms measure against the profit target instead, and some use a different window, so check your own account's terms.
What happens if I break it?
It varies: an extended evaluation, a reduced or delayed payout, or a failed challenge. It is not always an instant fail, but it is never harmless.
Do all prop firms have one?
No. The table on this page shows what our compliance data holds for each firm, including Verify where we could not confirm the rule from the firm's own terms.
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Keep learning
Consistency is a habit before it is a rule. Chart Bound drills the repeatable version of the same setup, free.
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